/**
 * Copyright (c) 2016-2019 人人开源 All rights reserved.
 * <p>
 * https://www.renren.io
 * <p>
 * 版权所有，侵权必究！
 */

package io.renren.modules.job.utils;

import io.renren.common.exception.RRException;
import io.renren.common.utils.Constant;
import io.renren.modules.job.entity.ScheduleJobEntity;
import org.quartz.*;

/**
 * 定时任务工具类
 *
 * @author Mark sunlightcs@gmail.com
 */
public class ScheduleUtils {
  private final static String JOB_NAME = "TASK_";

  /**
   * 获取触发器key
   */
  public static TriggerKey getTriggerKey(Long jobId) {
    return TriggerKey.triggerKey(JOB_NAME + jobId);
  }

  /**
   * 获取jobKey
   */
  public static JobKey getJobKey(Long jobId) {
    return JobKey.jobKey(JOB_NAME + jobId);
  }

  /**
   * 获取表达式触发器
   */
  public static CronTrigger getCronTrigger(Scheduler scheduler, Long jobId) {
    try {
      return (CronTrigger) scheduler.getTrigger(getTriggerKey(jobId));
    } catch (SchedulerException e) {
      throw new RRException("获取定时任务CronTrigger出现异常", e);
    }
  }

  /**
   * 创建定时任务
   */
  public static void createScheduleJob(Scheduler scheduler, ScheduleJobEntity scheduleJob) {
    try {
      //构建job信息
      JobDetail jobDetail = JobBuilder.newJob(ScheduleJob.class).withIdentity(getJobKey(scheduleJob.getJobId())).build();

      //表达式调度构建器
      CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(scheduleJob.getCronExpression())
        .withMisfireHandlingInstructionDoNothing();

      //按新的cronExpression表达式构建一个新的trigger
      CronTrigger trigger = TriggerBuilder.newTrigger().withIdentity(getTriggerKey(scheduleJob.getJobId())).withSchedule(scheduleBuilder).build();

      //放入参数，运行时的方法可以获取
      jobDetail.getJobDataMap().put(ScheduleJobEntity.JOB_PARAM_KEY, scheduleJob);

      scheduler.scheduleJob(jobDetail, trigger);

      //暂停任务
      if (scheduleJob.getStatus() == Constant.ScheduleStatus.PAUSE.getValue()) {
        pauseJob(scheduler, scheduleJob.getJobId());
      }
    } catch (SchedulerException e) {
      throw new RRException("创建定时任务失败", e);
    }
  }

  /**
   * 更新定时任务
   */
  public static void updateScheduleJob(Scheduler scheduler, ScheduleJobEntity scheduleJob) {
    try {
      TriggerKey triggerKey = getTriggerKey(scheduleJob.getJobId());

      //表达式调度构建器
      CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule(scheduleJob.getCronExpression())
        .withMisfireHandlingInstructionDoNothing();

      CronTrigger trigger = getCronTrigger(scheduler, scheduleJob.getJobId());

      //按新的cronExpression表达式重新构建trigger
      trigger = trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build();

      //参数
      trigger.getJobDataMap().put(ScheduleJobEntity.JOB_PARAM_KEY, scheduleJob);

      scheduler.rescheduleJob(triggerKey, trigger);

      //暂停任务
      if (scheduleJob.getStatus() == Constant.ScheduleStatus.PAUSE.getValue()) {
        pauseJob(scheduler, scheduleJob.getJobId());
      }

    } catch (SchedulerException e) {
      throw new RRException("更新定时任务失败", e);
    }
  }

  /**
   * 立即执行任务
   */
  public static void run(Scheduler scheduler, ScheduleJobEntity scheduleJob) {
    try {
      //参数
      JobDataMap dataMap = new JobDataMap();
      dataMap.put(ScheduleJobEntity.JOB_PARAM_KEY, scheduleJob);

      scheduler.triggerJob(getJobKey(scheduleJob.getJobId()), dataMap);
    } catch (SchedulerException e) {
      throw new RRException("立即执行定时任务失败", e);
    }
  }

  /**
   * 暂停任务
   */
  public static void pauseJob(Scheduler scheduler, Long jobId) {
    try {
      scheduler.pauseJob(getJobKey(jobId));
    } catch (SchedulerException e) {
      throw new RRException("暂停定时任务失败", e);
    }
  }

  /**
   * 恢复任务
   */
  public static void resumeJob(Scheduler scheduler, Long jobId) {
    try {
      scheduler.resumeJob(getJobKey(jobId));
    } catch (SchedulerException e) {
      throw new RRException("暂停定时任务失败", e);
    }
  }

  /**
   * 删除定时任务
   */
  public static void deleteScheduleJob(Scheduler scheduler, Long jobId) {
    try {
      scheduler.deleteJob(getJobKey(jobId));
    } catch (SchedulerException e) {
      throw new RRException("删除定时任务失败", e);
    }
  }
}
